Surface Analysis and Spectrophotometric Evaluation of Different Esthetic Restorative Materials Frequently Exposed to a Desensitizing Agent

Table 1

Student’s t-test, ANOVA, and post hoc tests of the surface microhardness results.

Group	Control		Tested		value	value
	Mean	SD	Mean	SD
RMGIC	71.26^b	0.86	66.66^b	0.91	8.17	0.0001
Amalgomer	84.85^a	2.18	70.59^a	1.6	11.78	0.0001
Nanohybrid	33.9^d	2.72	42.88^d	1.29	6.66	0.0002
Bulk-fill	58.58^c	2.33	46.35^c	2.25	8.45	0.0001
LSD value	0.0786		2.1354		—	—
value	0.0001		0.0001		—	—

LSD; least significant difference. a–d; means with the same letter in each column are not significantly different at  ≤ 0.05.